GB2465816A - RCD Quarterly Timer - Google Patents

RCD Quarterly Timer Download PDF

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Publication number
GB2465816A
GB2465816A GB0817962A GB0817962A GB2465816A GB 2465816 A GB2465816 A GB 2465816A GB 0817962 A GB0817962 A GB 0817962A GB 0817962 A GB0817962 A GB 0817962A GB 2465816 A GB2465816 A GB 2465816A
Authority
GB
United Kingdom
Prior art keywords
rcd
timer
mechanically
quartley
lee
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0817962A
Other versions
GB0817962D0 (en
Inventor
Ryan Patrick Turner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB0817962A priority Critical patent/GB2465816A/en
Publication of GB0817962D0 publication Critical patent/GB0817962D0/en
Publication of GB2465816A publication Critical patent/GB2465816A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C23/00—Clocks with attached or built-in means operating any device at preselected times or after preselected time-intervals
    • G04C23/38—Mechanisms measuring a chosen time interval independently of the time of day at which interval starts
    • G04C23/42—Mechanisms measuring a chosen time interval independently of the time of day at which interval starts acting only at the end of a single time interval
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
    • G04F1/005—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers using electronic timing, e.g. counting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
    • H02H3/334—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control
    • H02H3/335—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers with means to produce an artificial unbalance for other protection or monitoring reasons or remote control the main function being self testing of the device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2300/00—Orthogonal indexing scheme relating to electric switches, relays, selectors or emergency protective devices covered by H01H
    • H01H2300/052—Controlling, signalling or testing correct functioning of a switch

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)

Abstract

A residual current device (RCD) has a timer which counts down the time until the next testing of the device is due. When the countdown reaches zero a light or audible alarm alerts the user. The device may be designed to be mounted on an electrical distribution board or bus bar.

Description

RCD Quarterly/Safety Timer Invention This invention relates to the inspection intervals of RCDs (Residual Current Devices) or such devices; it ensures that the RCD is inspected at the correct interval given in accordance with BS7671 lEE Wiring Regulations.
Statement of invention/description
This invention is a quarterly time out timer that when it counts down to 0 (time out timer) it will make an audio alarm noise this should then alert! remind property! users owners, Maintance engineers etc that the device mechanically needs operating or known as "tripping" and resetting.
The device should supplied direct from the buss bar on the RCD side of the consumer unit/ distribution board with no means of isolation other than the RCD itself as the timing device will reset each time power is lost, this is because for the supply to be cut the RCD must of mechanically tripped. As for this it will only need resetting or mechanically testing on another quartley test.
Test device should be the same size of circuit breakers this is to ease installation and make the device more simpler/quicker to install.
The timer will be of class 11(16th edition BS7671) construction/Double insualted (17th edition BS7671).
A "mains healthy" indicator would indicate the device has power supply and is operating.
After the time out process has comenced, a red indication light will indicate the the RCD requires mechanicaly operating, this is also supported by an intermittent audio warning (this could also be enhanced by a remote warning/audio if the consumer unit/distribution board is located in a place out of sight or hearing.
Reason for an RCD Quartley Timing Device; All RCD, RCCB & RCBOs require mechanically operating quartley in an accordance with BS7671 lEE Wiring Regulations to test their mechanical parts from "sticking". * * * ** *
*.. The device will NOT operate/trip the RCD (or such device) as this may cause nusance tripping it is only to raise awarness of the need to carry : ** out mechanical inspection/operation of RCD (or such device). *** * S... * . * *. * . . S.. S
S
SI

Claims (5)

  1. Claims 1. An RCD quartley timer is comprising of a timing device (time out timer), that will acknowledge to the operator/user the period that RCDs should be mechanically tested.
  2. 2. RCD (Residual Current Devices) in accordance with BS7671 lEE Wiring Regulations should be mechanically tested quartley to prevent mechanical parts sticking.
  3. 3. Mechanical stuck parts within electrical components can cause increased fire risk
  4. 4. Mechanically stuck parts within electrical component will dramatically increase shock risk to persons & livestock.
  5. 5. Regular testing of RCDs by users which experience indicates is rarely carried out in practice In accordance with BS7671 lEE Wiring Regulations.S * S S S. * S... S * S... * ** * * S *SS S S... * S *SS' * .* * S * S.. S*S.SSSS S
GB0817962A 2008-10-01 2008-10-01 RCD Quarterly Timer Withdrawn GB2465816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0817962A GB2465816A (en) 2008-10-01 2008-10-01 RCD Quarterly Timer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0817962A GB2465816A (en) 2008-10-01 2008-10-01 RCD Quarterly Timer

Publications (2)

Publication Number Publication Date
GB0817962D0 GB0817962D0 (en) 2008-11-05
GB2465816A true GB2465816A (en) 2010-06-09

Family

ID=40019868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0817962A Withdrawn GB2465816A (en) 2008-10-01 2008-10-01 RCD Quarterly Timer

Country Status (1)

Country Link
GB (1) GB2465816A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665623A1 (en) * 1994-01-27 1995-08-02 Hager Electro S.A. Test device for differential circuit breaker and differential circuit breaker containing the same
WO2002033720A1 (en) * 2000-10-16 2002-04-25 Leviton Manufacturing Co., Inc. Circuit interrupting device
US20070146944A1 (en) * 2005-12-27 2007-06-28 General Protecht Group, Inc. Apparatus and methods for testing the life of a leakage current protection device
WO2007123390A1 (en) * 2006-04-26 2007-11-01 See Ni Fong A time alert device for use together with an earth leakage protection device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0665623A1 (en) * 1994-01-27 1995-08-02 Hager Electro S.A. Test device for differential circuit breaker and differential circuit breaker containing the same
WO2002033720A1 (en) * 2000-10-16 2002-04-25 Leviton Manufacturing Co., Inc. Circuit interrupting device
US20070146944A1 (en) * 2005-12-27 2007-06-28 General Protecht Group, Inc. Apparatus and methods for testing the life of a leakage current protection device
WO2007123390A1 (en) * 2006-04-26 2007-11-01 See Ni Fong A time alert device for use together with an earth leakage protection device

Also Published As

Publication number Publication date
GB0817962D0 (en) 2008-11-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)